Cake-forming machine



May 5. 1925.

R. A. TRACE CAKE FORMING MACHINE Filed July -30 1924 5 Sheets-Sheet 1 May 5, 1925.

R. A. TRACE CAKE FORMING MACHINE.

, Sheets-Sheet 2 Filed July 30, 1-924.

INVEIWDR.

C m m. m B

ATTORNEYS.

May 5, 1925. 1,536,951

R. A. TRACE CAKE FORMING MACHINE Filed July 30, 1924 5 Sheets-Sheet 3 A TTORNEYS.

May '5, 1925.

R. A. TRACE CAKE FORMING MACHINE Filed July 30, 1924 5 Sheets-Sheet 4 v m'mvrox.

May 5, 1925. 1,536,951

R. A. TRACE CAKE FORMING MACHINE Filed July 30, 1924 5 Sheets-Sheet 5 FMJO,

INVENTOR. f.

R0885. 6\Iknce,

Patented May 5,. 1925.

. saagsi UNITED STATES PATIENT orr cs.

. RUSSELL A. TRACE, orpAYmou, 01x10, .assrenon r scour-YE IRON or DAYTON, 01-110, A Gourouarronor OHIO.

GAKE-FCRMINGMACHINE.

9 Application filed July 30, 192 Serial n 729,070,

To all QUILO'IN/ it may concur-n.

Be it known that I, RUSSELL A. 'lnaon, a citizen of the United States, residing at Dayton, in the county of liflontgomcry and State of Ohio, have invcnted certain new and useful Improvements in Cake-FormingMachines, ofwhich' the following is" a specification. reference beinghad therein tot-he accompanying drawing.

This invention relates to cake forming machines and'fis designed as an improvement constituting an important advanced step on the machine set forth in Letters Patent No. 1,458,765, dated Sept. 25, 1923, granted to myself as patentee and assigned to the Buckeye Iron & Brass Works of Dayton, Ohio, a-

corporation of Ohio, to which is assigned also this present invention and application.

It will be understood th at in modern pracutice in oil mills, high'pressure oil for the actuation of the press is used under pressures ranging from about 4000 pounds to the square inch to 5200 pounds to the square inch, or more. Such oil receives its pressure 35 in the high pressure accumulator. it is also the practice to utilize this high pressure oil to actuate the rain of the cake former"through the con' pression period of its stroke, as set forth in said Letters Patent above referred to. in se pres. 'H'G oil is brought into action inoperat inn the rum. It is'the purpose, therefore of the present invention. to anton'iatically cut off the fur thin-supply of high pressure oilin its action on the ram at such time asthe function and oiiicesof the ram in con'ipressingthe meats shall have been completed and at that point .10 to then automatically cut off all further ontrancelo the rain of the high pressure oil. Thenthe oil is exhausted. and the ram ullmved to return to normal position as will. be explained hereinafter.

is to prevent the ram from acting so forcibly against the meats asto exude therefrom some But as alsoset forth id patent, all of the pressure of thehigh I would add that the purpose in thus cut ting off the high pressure oil from the ram' In the accompanying drawings forming a part of this specification: Figural 1s a front elevation of my invention and so much of the cake former as is necessary to show its application;

l' igure ,2 is a detail sectional view of the inlet valve forthe low pressure oil; I I

Figure 3 is a similar sectional view of the exhaust valve; 3 f I Figure 4 isv a like elevation to Figure l with parts removedto more clearly illustrate certain features of the invention,

Figure 5 1s a. detail View showing, the

means by which the actuators may be adjusted laterally with respect m the lever they actuate, being on the line 5--5 of Figure 4;

' Figure 6 isa plan View of my machine;

Figure 7 is an enlarged vertical sectional view of the check valve into which the high and 'low pressure oils are introduced and from which they discharge, at different times; i

Figure 8 is a similar view to Figure 4:, with the omission of certain parts for clarification and somewhat in the nature of a diagram I I F1 grure 9- is a diagran'nnatical view show-c ing the relation of my improved machine to the accui'uulators andexhaust tank; I

" Figure 10 is an enlarged vertical sectional view of the high pressure valve as a "whole;

Figure 11 is a similar View of the low pressure actuator, and v Figure 12 is a like view of the high pres sure actuator.

Referring to the drawings, the numeral 1 designates the base of the machine on which is mounteda general frame shown at Q'ivhich supports a platform. 3. The base further supports the ram consisting of a cylinder 4t and a piston 5 having a headfi on which is mounted a mold box 7 z BRASS WORKS,

adapted to acconuno- I date one or more false plates 7 to vary the 7 thickness of the meal cakes that are to he formed by compressing the oil meats. Canvas is laid in the mold box, with the ends of the strips extended beyond the box and then the meats which are to be formed into cakes are placed on the canvas within the mold box and the ends ofthe canvas folded back on the meats to constitute a sort of sack surroundingthe meats. Over the mold box is positioned and held a head block against the machine.

which the meats are compressed when the ram lifts the mold box, as shown in my Patent No. l,-l68,765. The columns 8 constitute the supports for such head block, which latter is not illustrated because it forms no partof the invention. a

In order that my invention may the more readily be understood, 1 shall lirst refer to the diagram shown in Figure Shin which the base is indicated at l, which may be assumed to include all of the mechanism of l designates the low pressure oil accumulator of a kind in common use having a maximum pressure of, say 500 pounds pressure to the square inch and which through a connect-ion 1 supplies low pressure oil through the low pressure valve 9, pipe line 21, check valve .43, pipes 25 and :26 to the 1am for operating the former through its initial travel up to the point where the meat-s have been compressed to the extent of say 400 pounds to the square inch. 1 designates the high pressure accumulator in which oil is put under maxi mum pressures varying from say 4000 pounds to the square inch-to 5200 pounds to the square inch, according to the practice of equipment in different oil mills, which variation occasions anecessity for the invention herein, as "already indicated, so as to cut off the high pressure oil after say 3500 pounds pressure has been exerted on the meats. A connection or pipe line 1 extends from the high pressure accumulator to the highpressure valve 35, thence throughthe pipe line 44, check valve 23, pipes 25 and 26 to the ram. The ram i5 is connected through a pipe line 1 to the exhaust valve l9, from whence the oil is carried by a pipe line 1? to an exhaust or pump tank 1 Witlrthis outline of the course and uses of the oil under high and low pressures, my invention will now be the more readily understood.

I will first describe the course of the low pressure oil and the instrumentalities from and through which it passes. Urged by the pressure in the accumulator 1 it passes thence through the pipe 1" into the inlet valve generally indicated at-t) in Figures 1, 2 and 6 particularly. This valve comprises a casing and an inlet valve proper indicated at .10 and seen in Figure 2. it is urged normally to its seat by an GXlJtlllSlOll spring 11 and isunseated manually, by means of a rod 12 actuated by a lever 13 mounted on a rock shaft It in a suitable bearing 15 on a standard 16 and in a bearing 17 on a standard 18, both standards being supported by the base 1. A rock arm 19 is secured to the shaft 14 and adapted to press inward on the rod 12 to unseat the valve 10 when the low pressure oil is to he admitted. As this oil=enters the valve 9 through the inlet port 20 the valve 10 is unseated, and the oil passes thence to the pipe line generally designated as 21. This pipe line has a suitable coupling 22 and tern'iinates at its ontrance into the check valve 28 shown best in Figures 1, at and 7. The oil lifts the check valve 2- and then passes into the pipe line which leads through a pipe 26 into the cylinder t of the ram. There it acts on the ram proper 5 and elevates or operates it to cause it to advance the mold box and its contained oil meats so that the latter will be compressed against that part of the former known as the head block. Continued action of the low pressure oil reduces the bulk of the meats and compacts them until they reach a condition to ol'l'er a resistance equal to 400 pounds pressure or a predetermined pressure less than the maximum pounds pressure of the low pressi-tre oil, at which instance the ram ceases to advance.

lVhen the low pressure oil flowed through the course just described, it also, or a portion of it, branched ofi through a subsidiary low pressure line 27 which connects at one end with the port 28 in the check valve 23, as seen at the point 29 in Figure i, and atthe other end 30 with the low-pressureactuator 31 having a plunger Sec Figures 4: and 11 in particular. lVhcn the resistance out the meats in the mold box equals or exceeds the pressure of the low pressure oil, it acts on the plunger 33 and causes it to lift on the lever 34, see Figures l and 8, until this lever lifts on the high pressure valve. This valve is composed of a casing generally designated at 35, and a valve rod 36 as best shown in Figure 10. This valve rod has a valve proper 37 which normally rests on a seat 38. The casing ol this valve is supported on a standard 3!) extending from the base. A projection 40 a1- tords support for the pivot; -11 of the lever Set. As the casing of this high pressure valve is connected through the pipe line 1 to the high pressure accumulator l, the high pressure valve will normally contain high pressure-oil in the pocket 42 and cause the valve proper 3'? to be seated. But when this valve is unsealed by the action ot the plunger he high pressure oil will immediately flow to the discharge port it,

and thence by the pipe lines it to the check valve 23. as best seen in ligures l, 8 and 10 and thence later through the pipe lines and 96 to the ram cylinder. The rain will thus be now actuated by the high pressure oil. lVhen the meats have been compressed to the degree required, yet without exuding or expelling the contained oil, say approximately 3500 pounds to the square inch, the resistance thus offered will cause the high pressure actuator L5 to cut of? further supply of high pressure oil to the rain. It will be understood, o1 course,

that when the high pressure oil was ad mitted to the pipe line 44,'it also filled the high pressure subsidiary pipe line 46 which carriedv such oil through that line on into this high pressure actuator 45. See Figures 4, 6 and 8. As will be'seen from the enlarged sectional view, Figure 12, this high pressureactuator comprises ageneral casing 45 having aninlet 47 with which connectssaid pipe line 46, and a plunger 48. lVhen, therefore, the resistance offered by the pressed meats exceeds say the 3500 pound limit, the high pressure oil then acts on the plunger 48and elevates it to cause it to tilt the lever 34 in the opposite direction to that before describech. namely, to tilt downward the long arm of this lever as the short arm is pressed upward. This re sults in'permitting the high pressure valve.

36-37 to become resisted or closed which incidentally cuts off the further supply of high pressure to the ram/The valve proper -37 is an unbalanced valve, so that when the tilting lever 34 1s withdrawn or lowered from under this "valve, it is unbalanced be- I cause the portion 37 is of diameter slightly less than the portion 36. This difierence gives a narrow margin at 38 around thereduced portion 37 which margin causes the valve to be unbalanced and to be closed when the valve is relievedo't the pressure of the tilting lever 34 as before described. This tendency of the valve 36-37 to close due to this unbalanced condition, aids also incidentally in depressing the long arm of "the lever 34. Incidentally the descent of the long arm of the lever 34 presses downward on the plunger 33 of the lowpressure Y actuator, but that is without functional result as-it merely depresses the plunger a little deeper into --whatever low pressure oil is then within this low pressure actuator. In the high pressure line 44 a suitable union -l54 is provided as also a like union 42 in the high pressure actuator line 46.

Such is thecycle of operations for effecting one elevation or actuationoit the ram for forming into a cake oil seed meats. The

nextstep is to lower the ram for the follow- I .ing or second cycle of operations. a This is,

done. by exhausting the oil now contained in the machine. To do this the lever 13 is moved to the other limit permitted by the stop 13" so that the rock armywill now actuate: the exhaust valve generally. indicated at 49,- Figures 1 and 3,:for instance. This valve has a casing with a seat 51, a valve 52 normally seated by a spring 53, and arod 13 to unseat this valve when the .rodis actuated by the rock arm. It also has an exhaustinlet port 54 and a tank port 55. The latter connects with the exhaust or pump tank 15 through a line 1 and the port'54 connects with theram cylinder through a pipe line 56 which itself c011- 4000 pounds per square inch.

. the ram cylinder.

Thus it will be seen that I have provided means whereby the high pressureoil will be out OK, say when the meats reach a condition to offer a resistance equal to or in excessof 3500 pounds to the square inch, at which time in this machine the further inlet cit high pressure oil is automatically stopped irrespective otthe-total high pres surein the high pressure accun'iulator. I regard myself to be the first to accomplish this result. The means shown and described constitute one eflicient organization for this purpose. But modifications and adaptations to suit particular situations may be made without departing from the spirit and substance of my invention.

I will now refer to a iteature by which the low pressure actuator shown generally at 31 and the high pressure actuator shown generally at 45, see Figure 4, may be adjusted. The position of either, or the positions of both may be adjusted as may be required with respect to the tilting lever 34 to cause its actuation to open the high pressure valve 35, when the meats offer a predetermined resistance of say:400 pounds,

more or less, when the low pressure maxi mum is at 500, 600 or 700 pounds pressure to the square inch; and to close the high pressure valve when the meats otter a resistance of 3000 to 3500 pounds pressure to the square inch, according to the high pressure accumulator oit theparticular app-aratus.

These adjustments of the actuators will give them leverage on the highpressurcvalve operating lever accordingto thedcsired pressure at which this high pressure valve isto be opened and closed by the respective actuators.

And it may be that some users will have a low pressure EtQCUHlUlLtt'Ol with a pressure not to exceed 500 pounds nmximuin, buta high pressure accumulatorthat will run as high as 5200 pounds or more, while other users may have low pressure accumulators with say 700 pounds maximum; pressure and a high pressure accunnilator not exceeding Tn difierent oil mills dili'erent n'iaxiuium pressures are found in their low pressure and high pres sure accumulators; By adjusting the actuators according to such conditions they are made to operate the high pressure valve op cases can be inoved laterally in either direction and then resecured by screwing up on the bolts. In this way theactu'ators may be positioned with respect to the fulcrum 41 ot the lever 34: for the purposes above described, so as to carry out the wishes or local conditions of the particular user.

l'laving thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a tormer, the combination with a ram, a low pressure accumulator and a high pressure acciumilatm', with pipe line connections between them and the ram, of a low pressure valve between the low pressure accumulator and the ram, a high pressure valve between the high pressure accumulator and the ram, a low pressure actuator adapted to open the high pressure valve, and a high pressure actuator adaptedto permit the high pressure valve to close.

2. In a former, the combination with a ram, a low pressure pipe line, a high pressure pipe line, of a low pressure valve connected to the low pressure line, of a high pressure valve connected to the high pres sure line, a low pressure actuator adapted to open the high pressure valve and a high pressure actuator adapted to close the high pressure valve.

3. In a former, the combination with a ram, and a low pressure and high pressure lines connected therewith, of a low pressure valve connected with the low pressure line, means to actuate said valve, a low pressure actuator connected with the low pressure line, a high pressure valve connected with the high pressure line, and a high pressure actuatoralso connected with the low pres sure line, said low pressure actuator being adapted to open the high pressure valve at apredetern'iined pressure, and said high pressure actuator being adapted to cause the high pressure valve to close at a predetermined prcssure, whereby when the low pressure fluid reaches such predetermined pressure it ceases to act on the ram and acts on the low pressure actuator, and whereby when the high pressure fluid reaches its predetermined pressure it ceases to act on the ram and acts on the high pressure actuator.

at. In a former, the combination with a ram and a low pressure and high pressure pipe line connected therewith, and a check valve common to such lines. of a low pressure valveconnccted to said valve, a high pressure valve connected to said check valve, a low pressure actuator connected to said checl; valve by a subsidiary pipe line a high pressure actuator connected to said check valve by another subsidiary pipe line, said low pressure actuator being adapted to open said high pressure valve, and said high pressure actuator being adapted to cause the high pressure valve to close.

In a former, the combination with a am, a low pressure pipe line and a high pressure pipe line connected therewith, ot a low pressure inlet alve connected with the low pressure line, means to operate said valve, a highpressure valve connected with the high pressure line, a check valve in said lines, of a low pressure actuator connccted by a subsidiary low pressure line to said check valve, a high pressure actuator connected by another subsidiary line to said check valve, a lever adapted to be actuated by the low pressure actuator to open the high pressure valve and adapted to be actuated by the high pressure actuator to permit the closing of the high pressure valve.

(3. In a former, the combination with a ram, a low pressure pipe line, a high pres sure pipe line, a low pressure valve connected to the low pressure line, and a high pressure valve connected to the high pre sure line, a low pressure actuator adapted to open the high pressure valve and a high pressure actuator adapted to close the high pressure valve, said actuators being adapted to be adjusted to different positions to control the high pressure valve at different low pressures and different high pressures respectively.

7. In a former, the combination with a ram, a low pressure pipe line, a high pressure pipe line, a low pressure valve connected to the low pressure line and a high pressure valve connected to the high pressure line, of a low pressure actuator adapted to open the high pressure valve and a high pressure actuator adapted to close the high pressure valve, an exhaust valve connected with the ram, and means to actuate a low pressure inlet valve and this exhaust 'alve.

8. In a former, the combination with a low pressure actuator and a high pressure actuator, of a high pressure valve adapted to be opened by such low pressure actuator and to be closed by such high pressure actuator.

9. In a former, the combination with a low pressure actuator and a high pressure actuator, of a high pressure valve and a lever adapted to be actuated by the low pressure actuator to open said valve and to be actuated by the high pressure actuator to cause the high pressure valve to close. said actuators beingadjustable to cause them to so control the high prcsure valve at difterent predetermined pressures.

10. In a former, the combination with a low pressure actuator and a high pressure actuator, of a standard, and means adapted to adjustably connect the actuators with such standard whereby their position may be varied.

In testimony whereof, I atiix my signature.

RUSSELL A. TRACE. 

